Improved wood pavement



lliltiied tatet @stent dhjlylire. -j

WILLIAM QROBBINS, or 'NEW YORKN. Y.; As'sIGNoR-'ro HIM? SELF W.STAFFORD, OF PLACE.

Letters Patent No. 93,837, dated A.August 17, 1869.

rfIMPRovnD woon PAVEMENT.,

The Schedule'refened to in these Iretterl Patent and making o! thesanne.l

To all whom it mayvconce'm r I I Be it known ,v that I, WILLIAM O.ROBLNS, of the city and State of New York, have invented and made l acertain new and useful Improvement in Wooden Pavements; and I do herebydeclare the followingto be a full, clear, and `,exact description of thenature of the said invention, reference being had to the annexeddrawing, making part of this specification, wherein- Figure l is a planot' the pavement, showing, also,"

portions of the foundation-sleepers.

been filled with gravel and asphaltum, or similarmaterial. In practice,it is frequentlyfound .that these intervening strips work npfto thesurface, leaving a space below for water,and the blocksbecome loose attheir bases. i f

The nature of my. said invention consists in a dovetailed iianged basetothe wooden blocks, connecting several together to forni a section,andkeeping the ranges of'blocks apart at their bases, so as to leave thenecessary intervening grooves; and. said sections are supported uponlongitudinal sleepersor sills, so that moisture rnay passfreely'away'into the earth be low the pavement. ,v By this device, theblocks composing each section are held rxnly to the dovetailed flangedbase, theseparate sections are kept at the proper 'distance apart,

and the sections are kept from sinking, one below the n other, by thelongitudinal sills or sleepers.'

In the drawing- 1 a a represent sills or sleepers, laid longitudinallyof the roadway, at suitable distances apart, and of a size,

sectionally, such as `may be necessaryvfor the required strength.

b-b are the flanged dovetailed base-timbers, made vof asuitablelength,either to pass' entirely across Ithe roadway, 'or a portion of thesarne;and I prefer that these base-timbers?) be worked out in the curvedformnecessary toaocommodatethe curvature or carnber of the street,transversely of the same; and upon the upper` surface of b'there is adovetailed rib, 2, formed.

, Y. The bottoms ofthe blocks care groovedwith a l dovetailed groove,rtolit the rib 2,' and these blocks c are forced upon said rib 2, so a's.to form a section'of` pavement .of the desired length.

These sections of pavement'restupon the sills or sleepers a, and thetimbers l), extending beyond the Y sides of the blocksc, form flanges tothe same. at theV base that' keep one range'of blocks at the desireddis-V tance from the next, to leave the groove required for giving afoothold for horses, or receiving any desired character of filling, j

What I claim, and desire to'secure by Letters Patent isp 'llhe dovetaledflanged base, receivngwthe pavingblocks, and forming a'section that issupported by the In. witness whereof', (I have hereunto's'et my signa#ture, this 27th day of April, A. D. 1869,

-. WM. O. ROBBINS..

' Witnesses: n

GEO. D. WALKER, GEO. T. PINCKNEY.

